Emits directives for the function and every constituent basic block to the output., expr=None)

Emits (the assembler directives for) a single migraine record to the output.

The directives used by migraine correspond to three fields:

  1. A length prefix for the migraine identifier (size = 8 bytes)

  2. The migraine identifier (size = length prefix)

  3. The corresponding VA (size = 8 bytes)